95 template <
typename val
idator_type>
96 SEQAN3_CONCEPT
validator = std::copyable<std::remove_cvref_t<validator_type>> &&
139 if (!((cmp <= max) && (cmp >= min)))
140 throw validation_error{detail::to_string(
"Value ", cmp,
" is not in range [", min,
",", max,
"].")};
149 template <std::ranges::forward_range range_type>
155 std::for_each(range.begin(), range.end(), [&] (
auto cmp) { (*this)(cmp); });
161 return detail::to_string(
"Value must be in range [", min,
",", max,
"].");
189 template <
typename option_value_t>
211 template <std::ranges::forward_range range_type>
213 requires std::constructible_from<option_value_type, std::ranges::range_rvalue_reference_t<range_type>>
226 template <
typename ...option_types>
228 requires ((std::constructible_from<option_value_type, option_types> && ...))
232 (values.
emplace_back(std::forward<option_types>(opts)), ...);
243 throw validation_error{detail::to_string(
"Value ", cmp,
" is not one of ", std::views::all(values),
".")};
251 template <std::ranges::forward_range range_type>
253 requires std::convertible_to<std::ranges::range_value_t<range_type>,
option_value_type>
257 std::for_each(std::ranges::begin(range), std::ranges::end(range), [&] (
auto cmp) { (*this)(cmp); });
263 return detail::to_string(
"Value must be one of ", std::views::all(values),
".");
277 template <
typename option_type,
typename ...option_types>
285 template <typename range_type>
287 requires (
std::ranges::forward_range<
std::decay_t<range_type>> &&
288 std::constructible_from<
std::
string,
std::ranges::range_value_t<range_type>>)
293 template <typename option_type, typename ...option_types>
297 template <typename range_type>
299 requires (
std::ranges::forward_range<
std::decay_t<range_type>>)
350 template <std::ranges::forward_range range_type>
356 std::for_each(v.begin(), v.end(), [&] (
auto cmp) { this->operator()(cmp); });
368 if (extensions.empty())
373 throw validation_error{detail::to_string(
"The given filename ", path.
string(),
" has no extension. Expected"
374 " one of the following valid extensions:", extensions,
"!")};
379 if (file_path.front() ==
'.')
380 file_path.erase(0, 1);
386 auto case_insensitive_ends_with = [&] (
std::string const & ext)
388 return case_insensitive_string_ends_with(file_path, ext);
394 throw validation_error{detail::to_string(
"Expected one of the following valid extensions: ", extensions,
395 "! Got ", all_extensions,
" instead!")};
412 if (
static_cast<bool>(ec))
413 throw validation_error{detail::to_string(
"Cannot read the directory ", path ,
"!")};
419 throw validation_error{detail::to_string(
"Expected a regular file ", path,
"!")};
422 if (!file.is_open() || !file.good())
423 throw validation_error{detail::to_string(
"Cannot read the file ", path,
"!")};
436 detail::safe_filesystem_entry file_guard{path};
438 bool is_open = file.is_open();
439 bool is_good = file.good();
442 if (!is_good || !is_open)
451 if (extensions.empty())
454 return detail::to_string(
" Valid file extensions are: [", extensions | views::join(
std::string{
", "}),
"].");
464 size_t const suffix_length{suffix.
size()};
465 size_t const str_length{str.
size()};
466 return suffix_length > str_length ?
468 std::ranges::equal(str.
substr(str_length - suffix_length), suffix, [] (
char const chr1,
char const chr2)
470 return std::tolower(chr1) == std::tolower(chr2);
500 template <
typename file_t =
void>
505 static_assert(std::same_as<file_t, void> || detail::has_type_valid_formats<file_t>,
506 "Expected either a template type with a static member called valid_formats (a file type) or void.");
525 if constexpr (!std::same_as<file_t, void>)
545 requires std::same_as<file_t, void>
557 using file_validator_base::operator();
569 throw validation_error{detail::to_string(
"The file ", file,
" does not exist!")};
590 return "The input file must exist and read permissions must be granted." +
630 template <
typename file_t =
void>
634 static_assert(std::same_as<file_t, void> || detail::has_type_valid_formats<file_t>,
635 "Expected either a template type with a static member called valid_formats (a file type) or void.");
681 if constexpr (!std::same_as<file_t, void>)
682 return detail::valid_file_extensions<typename file_t::valid_formats>();
687 using file_validator_base::operator();
699 throw validation_error{detail::to_string(
"The file ", file,
" already exists!")};
722 return "The output file must not exist already and write permissions must be granted." +
766 using file_validator_base::operator();
778 throw validation_error{detail::to_string(
"The directory ", dir,
" does not exists!")};
781 throw validation_error{detail::to_string(
"The path ", dir,
" is not a directory!")};
799 return detail::to_string(
"An existing, readable path for the input directory.");
838 using file_validator_base::operator();
852 if (
static_cast<bool>(ec))
853 throw validation_error{detail::to_string(
"Cannot create directory: ", dir,
"!")};
859 detail::safe_filesystem_entry dir_guard{dir};
861 dir_guard.remove_all();
881 return detail::to_string(
"A valid path for the output directory.");
923 throw validation_error{detail::to_string(
"Value ", cmp,
" did not match the pattern ", pattern,
".")};
932 template <std::ranges::forward_range range_type>
934 requires std::convertible_to<std::ranges::range_value_t<range_type>,
option_value_type const &>
945 return detail::to_string(
"Value must match the pattern '", pattern,
"'.");
966 template <
typename option_value_t>
967 struct default_validator
970 using option_value_type = option_value_t;
973 void operator()(option_value_t
const & )
const noexcept
994 template <val
idator val
idator1_type, val
idator val
idator2_type>
996 requires std::common_with<typename validator1_type::option_value_type, typename validator2_type::option_value_type>
998 class validator_chain_adaptor
1003 typename validator2_type::option_value_type>;
1008 validator_chain_adaptor() =
delete;
1009 validator_chain_adaptor(validator_chain_adaptor
const & pf) =
default;
1010 validator_chain_adaptor & operator=(validator_chain_adaptor
const & pf) =
default;
1011 validator_chain_adaptor(validator_chain_adaptor &&) =
default;
1012 validator_chain_adaptor & operator=(validator_chain_adaptor &&) =
default;
1018 validator_chain_adaptor(validator1_type vali1_, validator2_type vali2_) :
1023 ~validator_chain_adaptor() =
default;
1034 template <
typename cmp_type>
1036 requires std::invocable<validator1_type, cmp_type const> && std::invocable<validator2_type, cmp_type const>
1047 return detail::to_string(vali1.get_help_page_message(),
" ", vali2.get_help_page_message());
1052 validator1_type vali1;
1054 validator2_type vali2;
1086 template <val
idator val
idator1_type, val
idator val
idator2_type>
1088 requires std::common_with<typename std::remove_reference_t<validator1_type>::option_value_type,
1091 auto operator|(validator1_type && vali1, validator2_type && vali2)
1093 return detail::validator_chain_adaptor{std::forward<validator1_type>(vali1),
1094 std::forward<validator2_type>(vali2)};
Adaptations of algorithms from the Ranges TS.
A validator that checks whether a number is inside a given range.
Definition: validators.hpp:120
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
Definition: validators.hpp:159
arithmetic_range_validator(option_value_type const min_, option_value_type const max_)
The constructor.
Definition: validators.hpp:129
double option_value_type
The type of value that this validator invoked upon.
Definition: validators.hpp:123
void operator()(option_value_type const &cmp) const
Tests whether cmp lies inside [min, max].
Definition: validators.hpp:137
void operator()(range_type const &range) const
Tests whether every element in range lies inside [min, max].
Definition: validators.hpp:153
An abstract base class for the file and directory validators.
Definition: validators.hpp:317
file_validator_base & operator=(file_validator_base &&)=default
Defaulted.
bool case_insensitive_string_ends_with(std::string_view str, std::string_view suffix) const
Helper function that checks if a string is a suffix of another string. Case insensitive.
Definition: validators.hpp:462
void validate_filename(std::filesystem::path const &path) const
Validates the given filename path based on the specified extensions.
Definition: validators.hpp:365
file_validator_base & operator=(file_validator_base const &)=default
Defaulted.
std::string valid_extensions_help_page_message() const
Returns the information of valid file extensions.
Definition: validators.hpp:449
virtual void operator()(std::filesystem::path const &path) const =0
Tests if the given path is a valid input, respectively output, file or directory.
std::string option_value_type
Type of values that are tested by validator.
Definition: validators.hpp:321
void operator()(range_type const &v) const
Tests whether every path in list v passes validation. See operator()(option_value_type const & value)...
Definition: validators.hpp:354
file_validator_base(file_validator_base &&)=default
Defaulted.
void validate_readability(std::filesystem::path const &path) const
Checks if the given path is readable.
Definition: validators.hpp:405
file_validator_base()=default
Defaulted.
file_validator_base(file_validator_base const &)=default
Defaulted.
std::vector< std::string > extensions
Stores the extensions.
Definition: validators.hpp:475
virtual ~file_validator_base()=default
void validate_writeability(std::filesystem::path const &path) const
Checks if the given path is writable.
Definition: validators.hpp:433
A validator that checks if a given path is a valid output directory.
Definition: validators.hpp:818
output_directory_validator()=default
Defaulted.
output_directory_validator & operator=(output_directory_validator const &)=default
Defaulted.
virtual ~output_directory_validator()=default
Virtual Destructor.
output_directory_validator(output_directory_validator &&)=default
Defaulted.
output_directory_validator(output_directory_validator const &)=default
Defaulted.
virtual void operator()(std::filesystem::path const &dir) const override
Tests whether path is writable.
Definition: validators.hpp:845
output_directory_validator & operator=(output_directory_validator &&)=default
Defaulted.
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
Definition: validators.hpp:879
A validator that checks if a given path is a valid output file.
Definition: validators.hpp:632
output_file_validator(output_file_validator &&)=default
Defaulted.
output_file_validator(output_file_validator const &)=default
Defaulted.
output_file_validator & operator=(output_file_validator const &)=default
Defaulted.
virtual void operator()(std::filesystem::path const &file) const override
Tests whether path is does not already exists and is writable.
Definition: validators.hpp:694
static std::vector< std::string > default_extensions()
The default extensions of file_t.
Definition: validators.hpp:679
output_file_validator()
Default constructor.
Definition: validators.hpp:645
output_file_validator & operator=(output_file_validator &&)=default
Defaulted.
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
Definition: validators.hpp:717
virtual ~output_file_validator()=default
Virtual Destructor.
output_file_validator(output_file_open_options const mode, std::vector< std::string > extensions=default_extensions())
Constructs from a given overwrite mode and a list of valid extensions.
Definition: validators.hpp:660
A validator that checks if a matches a regular expression pattern.
Definition: validators.hpp:903
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
Definition: validators.hpp:943
void operator()(option_value_type const &cmp) const
Tests whether cmp lies inside values.
Definition: validators.hpp:919
void operator()(range_type const &v) const
Tests whether every filename in list v matches the pattern.
Definition: validators.hpp:936
std::string option_value_type
Type of values that are tested by validator.
Definition: validators.hpp:906
regex_validator(std::string const &pattern_)
Constructing from a vector.
Definition: validators.hpp:911
Argument parser exception thrown when an argument could not be casted to the according type.
Definition: exceptions.hpp:141
A validator that checks whether a value is inside a list of valid values.
Definition: validators.hpp:191
value_list_validator()=default
Defaulted.
void operator()(option_value_type const &cmp) const
Tests whether cmp lies inside values.
Definition: validators.hpp:240
value_list_validator(value_list_validator const &)=default
Defaulted.
option_value_t option_value_type
Type of values that are tested by validator.
Definition: validators.hpp:194
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
Definition: validators.hpp:261
value_list_validator & operator=(value_list_validator &&)=default
Defaulted.
void operator()(range_type const &range) const
Tests whether every element in range lies inside values.
Definition: validators.hpp:255
value_list_validator(value_list_validator &&)=default
Defaulted.
~value_list_validator()=default
Defaulted.
value_list_validator & operator=(value_list_validator const &)=default
Defaulted.
value_list_validator(range_type rng)
Constructing from a range.
Definition: validators.hpp:215
T create_directory(T... args)
T current_exception(T... args)
Auxiliary for pretty printing of exception messages.
Provides seqan3::debug_stream and related types.
T emplace_back(T... args)
Provides parser related exceptions.
Provides concepts for core language types and relations that don't have concepts in C++20 (yet).
This header includes C++17 filesystem support and imports it into namespace std::filesystem (independ...
auto operator|(validator1_type &&vali1, validator2_type &&vali2)
Enables the chaining of validators.
Definition: validators.hpp:1091
constexpr ptrdiff_t find_if
Get the index of the first type in a pack that satisfies the given predicate.
Definition: traits.hpp:209
auto const move
A view that turns lvalue-references into rvalue-references.
Definition: move.hpp:70
T has_extension(T... args)
A type that satisfies std::is_arithmetic_v<t>.
The concept for option validators passed to add_option/positional_option.
void operator()(option_value_type const &cmp) const
Validates the value 'cmp' and throws a seqan3::validation_error on failure.
std::string get_help_page_message() const
Returns a message that can be appended to the (positional) options help page info.
using option_value_type
The type of value on which the validator is called on.
Provides various utility functions.
T is_directory(T... args)
T is_regular_file(T... args)
Provides seqan3::views::join.
The main SeqAn3 namespace.
Definition: aligned_sequence_concept.hpp:29
output_file_open_options
Mode of an output file: Determines whether an existing file can be (silently) overwritten.
Definition: validators.hpp:597
@ create_new
Forbid overwriting the output file.
@ open_or_create
Allow to overwrite the output file.
SeqAn specific customisations in the standard namespace.
Adaptations of concepts from the standard library.
Adaptations of concepts from the Ranges TS.
T rethrow_exception(T... args)
Provides seqan3::detail::safe_filesystem_entry.
T throw_with_nested(T... args)
Provides traits for seqan3::type_list.
Provides various traits for template packs.
Provides various type traits on generic types.